package com.itheima.controller;

import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.util.JwtUtil;
import com.itheima.util.Md5Util;
import com.itheima.util.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Validated
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;


    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username,
                           @Pattern(regexp = "^\\S{5,16}$") String password) {
        //查询用户
        User u = userService.findByUserName(username);
        if (u == null) {
            //注册
            userService.register(username, password);
            return Result.success();

        } else {
            //用户名已经占用
            return Result.error("用户名已经被占用");

        }


    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username,
                                @Pattern(regexp = "^\\S{5,16}$") String password) {
        //根据用户名查询
        User loginUser = userService.findByUserName(username);

        //判断该用户是否纯在
        if (loginUser == null) {
            return Result.error("用户名错误");
        }


        //判断密码是否正确
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())) {
            //登录成功
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginUser.getId());
            claims.put("username", loginUser.getUsername());

            String token = JwtUtil.genToken(claims);

            //把token储存到redis中
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            operations.set(token, token,1, TimeUnit.HOURS);     //键值都为token相当于==了

            return Result.success(token);

        }
        return Result.error("密码错误");


    }

    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name="Authorization") String token*/) {
  /*          Map<String,Object> map =JwtUtil.parseToken(token);
            String username=(String) map.get("username");*/
        Map<String, Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");


        User user = userService.findByUserName(username);
        return Result.success(user);
    }

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user) {
        userService.update(user);
        return Result.success();

    }

    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updataPwd(@RequestBody Map<String, String> params,@RequestHeader("Authorization") String token) {
        //1校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        params.get("re_pwd");

        if (!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");


        }
        //原密码是否正确
        //调用userService根据用户名拿到原密码,和oldPwd比对
        Map<String, Object> map = ThreadLocalUtil.get();
        User loginUser = userService.findByUserName((String) map.get("username"));
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd)  )) {
             return Result.error("原密码填写不正确");
        }
        //newPwd?=rePwd
        if(!newPwd.equals(rePwd)){
            return  Result.error("两次填写的密码不一样");
        }


        //2.调用Service完成密码更新
         userService.updatePwd(newPwd);
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);

        return Result.success();
    }


}
